package BoyFindGirlFriend;

public class Examp_1 {
    public static void main(String[] args){
       Boy boy=new Boy();
       boy.setGirlFriend(new SichuanGirlFriend());
       boy.showGirlFriend();
       boy.setGirlFriend(new UsGirlFriend());
       boy.showGirlFriend();
    }
}
